Double-filter belt check filter valve
By using a dual-filter design with a check valve, the problem of traditional filter valves being unable to effectively filter large and small particles and prevent water backflow is solved, achieving efficient water filtration and backflow prevention.
Patent Information
- Application Number
- CN202520051564.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-01-09
AI Technical Summary
Traditional filter valves only have one filtration stage, which cannot effectively remove large and small particles of impurities from the water flow and can easily cause water backflow, resulting in pollution.
Design a dual-filter valve with check valve, comprising a coarse filter connector and a fine filter connector, which filter large and small particles of impurities through the first and second filter pipes respectively, and prevent water backflow through the check valve structure.
It achieves dual filtration of the water flow, ensuring the cleanliness of the water and effectively preventing backflow to avoid pollution.
Smart Images
Figure CN223635462U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a filter valve, especially a double-filtering back -check filter valve. BACKGROUND
[0002] The filter valve is a valve with filtering function, when water flow flows in the valve body, is filtered by the filter pipe in it, the traditional filter valve only has a filter, and in the actual filtering process, the water flow is mixed with impurities of different particle sizes, if the filter hole of the filter pipe in the filter valve adopts a small aperture, the filter hole on the filter pipe is easily blocked, affecting the normal flow of water flow, if the filter hole of the filter pipe in the filter valve adopts a large aperture, although it is not easy to be blocked by impurities in the water flow, but small-particle impurities are still mixed in the filtered water flow, which cannot guarantee the cleanliness of the water flow.
[0003] And in the actual water flow conveying process of the filter valve, backflow occurs due to the existence of some resistance, once the water flow backflows, a large amount of impurities originally trapped in the filter pipe backflows at one time, causing serious water pollution. SUMMARY
[0004] The utility model solves the prior art problems and provides a double-filtering back -check filter valve, which not only has double filtering, can filter out large-particle impurities and small-particle impurities in water flow at the same time, and can effectively avoid water flow backflow, achieving backflow prevention effect.
[0005] The utility model adopts the technical scheme that:
[0006] The utility model discloses a double-filtering back -check filter valve, including the valve body, the water inlet joint of being located the left end of valve body and the water outlet joint of being located the right end of valve body, the upper surface of valve body is equipped with the coarse filter joint, is located the fine filter joint of coarse filter joint right side, the water inlet joint with coarse filter joint is penetrated through first water through -hole, the coarse filter joint with the left part of valve body is penetrated through second water through -hole, the right part of valve body with fine filter joint is penetrated through third water through -hole, fine filter joint with water outlet joint is penetrated through fourth water through -hole, the first filter pipe is equipped in the coarse filter joint, and the first filter pipe lower end pipe orifice is penetrated through first water through -hole, and the second water through -hole is shielded to the outer wall of first filter pipe, the second filter pipe is equipped in fine filter joint, and the second filter pipe lower end pipe orifice is penetrated through third water through -hole, and the fourth water through -hole is shielded to the outer wall of second filter pipe, the diameter of the filter hole on the first filter pipe is greater than the diameter of the filter hole on the second filter pipe, the water outlet joint has a back -check structure.
[0007] The first water hole upper end hole edge extends upwardly to a first limiting part in the shape of a ring; the first water hole outer ring has a first lower limiting step in the shape of a ring; the first coarse filter connector upper end port has a first plug screwed therein; the first plug upper inner wall has a first upper limiting step in the shape of a ring; the first water filter pipe is located between the first upper limiting step and the first lower limiting step, and the first water filter pipe lower end is sleeved on the first limiting part.
[0008] The third water hole upper end hole edge extends upwardly to a second limiting part in the shape of a ring; the third water hole outer ring has a second lower limiting step in the shape of a ring; the third fine filter connector upper end port has a second plug screwed therein; the second plug upper inner wall has a second upper limiting step in the shape of a ring; the second water filter pipe is located between the second upper limiting step and the second lower limiting step, and the second water filter pipe lower end is sleeved on the second limiting part.
[0009] The coarse filter connector upper end and the fine filter connector upper end are both inclined to the right.
[0010] The check structure comprises a clamping part arranged in the left part of the water outlet connector, and the clamping part is in the shape of a ring; the water outlet connector is internally provided with a clamping groove in the shape of a ring, and the clamping groove is located on the right side of the clamping part; the diameter of the clamping groove gradually increases from left to right; the water outlet connector is internally provided with a check seat which is in close contact with the right side wall of the clamping part, and the check seat is in the shape of a ring; the right side of the check seat is provided with a limiting seat which is matched with the clamping groove; the limiting seat is in the shape of a ring, and the right side of the limiting seat is provided with a guide seat which is coaxial with the limiting seat; the guide seat and the limiting seat are connected through a plurality of support plates which are uniformly distributed in a circle; the guide seat is provided with a guide hole in the center; the left side wall of the guide seat is provided with a spring groove in the shape of a ring; a sealing ring is arranged between the check seat and the limiting seat; the guide hole is provided with a guide rod which is matched with the guide hole; the left end of the guide rod penetrates into the inner hole of the limiting seat to the left and is provided with a sealing head which seals the right end hole of the inner hole of the sealing ring; a spring is arranged outside the guide rod between the sealing head and the bottom of the spring groove.
[0011] The right end of the limiting seat is provided with a plurality of uniformly distributed notches in a circle; the notches are provided with an elastic sheet, and the right end of the elastic sheet is inclined outwardly and embedded in the clamping groove.
[0012] The right end face outer edge of the check seat extends to the right to form a connecting part in the shape of a ring, and the inner wall of the connecting part is provided with a groove in the shape of a ring; the left end outer wall of the limiting seat is provided with a ring-shaped protrusion which is matched with the groove; the sealing ring is located between the left end face of the limiting seat and the right end face of the check seat.
[0013] The left end face of the sealing ring is provided with a positioning groove in the shape of a ring; the right end face of the check seat is provided with a positioning protrusion which is matched with the positioning groove.
[0014] The outer wall of the check seat is provided with an annular groove; and the annular groove is provided with an O-shaped ring matched with the annular groove.
[0015] The utility model has the advantages of:
[0016] Compared with the prior art, the first filter pipe of the double-filtering-band check filter valve adopting the utility model structure can form the first filtering, the second filter pipe can form the second filtering, the first filtering formed by the first filter pipe can filter out the large-particle impurities in the water flow, realizing the coarse filtering of the water flow, the second filtering formed by the second filter pipe can filter out the small-particle impurities in the water flow, realizing the fine filtering of the water flow, so that the water flow is guaranteed to be clean to the greatest extent through the double-filtering mode, at the same time, the check structure can effectively prevent the water flow from backflowing, effectively avoiding the situation that the large-particle impurities blocked in the first filter pipe enter into the water inlet pipe connected with the water inlet joint, causing serious pollution. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 is a sectional view of the double-filtering-band check filter valve of the utility model;
[0018] Figure 2 is Figure 1 an enlarged view of A part of
[0019] Figure 3 is a structural schematic view of the check structure;
[0020] Figure 4 is a structural schematic view of the double-filtering-band check filter valve of the utility model. DETAILED DESCRIPTION
[0021] The application will be further described in detail in combination with the drawings and specific embodiments:
[0022] Please refer to Figures 1 to 4The utility model provides a kind of double filtering zone check valve, including valve body 20, be located at the water inlet joint 2 of valve body 20 left end and be located at the water outlet joint 3 of valve body 20 right end, the upper surface of valve body 20 is equipped with coarse filter joint 4, fine filter joint 5 located at the right side of coarse filter joint 4;The water inlet joint 2 and coarse filter joint 4 are penetrated by first water through hole 6;Coarse filter joint 4 and the left part of valve body 20 are penetrated by second water through hole 7;The right part of valve body 20 and fine filter joint 5 are penetrated by third water through hole 8;Fine filter joint 5 and water outlet joint 3 are penetrated by fourth water through hole 9;Coarse filter joint 4 is equipped with first filter pipe 10, and the lower end pipe orifice of first filter pipe 10 is penetrated with first water through hole 6, and the outer wall of first filter pipe 10 shields second water through hole 7;Fine filter joint 5 is equipped with second filter pipe 11, and the lower end pipe orifice of second filter pipe 11 is penetrated with third water through hole 8, and the outer wall of second filter pipe 11 shields fourth water through hole 9;The diameter of filter hole on the first filter pipe 10 is greater than the diameter of filter hole on the second filter pipe 11;Water outlet joint 3 has a check structure.
[0023] The upper end orifice rim of first water through hole 6 extends annular first limiting portion 12 upwards;First water through hole 6 outer ring has annular first lower limiting step 13;First plug 14 matched with the first plug 14 is screwed in the upper end port of coarse filter joint 4;Annular first upper limiting step 15 is arranged on the inner wall of the upper part of first plug 14;First filter pipe 10 is located between first upper limiting step 15 and first lower limiting step 13, and the lower end of first filter pipe 10 is sleeved outside first limiting portion 12.
[0024] The upper end orifice rim of third water through hole 8 extends annular second limiting portion 16 upwards;Third water through hole 8 outer ring has annular second lower limiting step 17;Second plug 18 matched with the second plug 18 is screwed in the upper end port of fine filter joint 5;Annular second upper limiting step 19 is arranged on the inner wall of the upper part of second plug 18;Second filter pipe 11 is located between second upper limiting step 19 and second lower limiting step 17, and the lower end of second filter pipe 11 is sleeved outside second limiting portion 16.
[0025] The upper end of coarse filter joint 4 and the upper end of fine filter joint 5 are all inclined to right.
[0026] The check structure comprises a clamping portion 101 arranged in the left part of the water outlet joint 3, and the clamping portion 101 is annular; the water outlet joint 3 is provided with a clamping groove 102 which is annular and is located at the right side of the clamping portion 101; the diameter of the clamping groove 102 gradually increases from left to right; the water outlet joint 3 is provided with a check seat 103 which is annular and is attached to the right side wall of the clamping portion 101; the right side of the check seat 103 is provided with a limiting seat 104 which is matched with the clamping groove 102; the limiting seat 104 is annular, and the right side of the limiting seat 104 is provided with a guide seat 105 which is coaxial with the limiting seat 104; the guide seat 105 and the limiting seat 104 are connected through a plurality of support plates 106 which are uniformly distributed in a circle; the guide seat 105 is provided with a guide hole 107 in the center; the left side wall of the guide seat 105 is provided with a spring groove 108 which is annular; a sealing ring 109 is arranged between the check seat 103 and the limiting seat 104; the guide hole 107 is provided with a guide rod 110 which is matched with the guide hole 107; the left end of the guide rod 110 penetrates into the inner hole of the limiting seat 104 to the left and is provided with a sealing head 111, and the sealing head 111 seals the right end hole of the inner hole of the sealing ring 109; a spring 112 is arranged on the guide rod 110 outside between the sealing head 111 and the groove bottom of the spring groove 108.
[0027] The right end of the limiting seat 104 is provided with a plurality of uniformly distributed notches 113; the notches 113 are provided with an elastic sheet 114, and the right end of the elastic sheet 114 is outwardly inclined and embedded in the clamping groove 102.
[0028] The right end face of the check seat 103 extends to the right to form an annular connecting portion 115, and the inner wall of the connecting portion 115 is provided with an annular groove 116; the left end outer wall of the limiting seat 104 is provided with an annular protrusion 117 which is matched with the groove 116; the sealing ring 109 is located between the left end face of the limiting seat 104 and the right end face of the check seat 103.
[0029] The left end face of the sealing ring 109 is provided with an annular positioning groove 118; the right end face of the check seat 103 is provided with a positioning protrusion 119 which is matched with the positioning groove 118.
[0030] The outer wall of the check seat 103 is provided with an annular groove 120; the annular groove 120 is provided with an O-shaped ring 121 which is matched with the annular groove 120.
[0031] The use method of the utility model is as follows:
[0032] The water inlet joint 2 can be used to connect the water inlet pipeline, and the water outlet joint 3 can be used to connect the water outlet pipeline. When the water flow in the water inlet pipeline enters the water inlet joint 2, it will flow into the first filter pipe 10 through the first water hole 6 and the lower end port of the first filter pipe 10 in sequence. In the case that the second water hole 7 is shielded by the outer wall of the first filter pipe 10, the water flow in the first filter pipe 10 must flow through the filter hole on the first filter pipe 10 to flow into the valve body 20. The first filter pipe 10 and the second filter pipe 11 are both existing filter pipes, only the diameters of the filter holes are different. The first filter pipe 10 with large-diameter filter holes can retain large-particle impurities in the water flow in its own interior, achieving coarse filtration of the water flow. When the coarsely filtered water flow flows into the valve body 20 through the second water hole 7, it will flow into the second filter pipe 11 through the third water hole 8 and the lower end port of the second filter pipe 11 in sequence. In the case that the fourth water hole 9 is shielded by the second filter pipe 11, when the water flow in the second filter pipe 11 flows to the water outlet joint 3, the small-diameter filter holes on the second filter pipe 11 will retain small-particle impurities in the water flow in their own interiors, achieving fine filtration of the water flow, thereby effectively ensuring the cleanliness of the water flow flowing into the water outlet joint 3.
[0033] When the water flow flows into the water outlet joint 3, it will push the sealing head 111 to the right through the hole in the check seat 103 under the subsequent water flow. When the sealing head 111 moves to the right, the guide rod 110 can play a guiding role to ensure the stability of the right movement of the sealing head 111. At the same time, the spring 112 is compressed and generates elastic force. When the sealing head 111 moves to the right, the right end hole of the hole in the sealing ring 109 is no longer blocked and sealed, and the water flow in the hole in the check seat 103 can flow into the gap between the inner wall of the limiting seat 104 and the outer wall of the sealing head 111 through the right end hole of the hole in the sealing ring 109, and then flow to the right end port of the water outlet joint 3 through the gap between the adjacent support plates 106, and finally flow into the water outlet pipeline connected with the water outlet joint 3 for use.
[0034] If backflow occurs during the conveying of the water flow, the backflow will push the sealing head 111 to the left. At the same time, the elastic force of the spring 112 will make the sealing head 111 move to the left and reset at the first time, so that the right end hole of the hole in the sealing ring 109 is blocked and sealed at the first time, thereby directly retaining the backflow in the water outlet joint 3, achieving the check effect.
[0035] In conclusion, the first filter pipe 10 can form the first filtering, the second filter pipe 11 can form the second filtering, the first filtering formed by the first filter pipe 10 can filter out the large particle impurities in the water flow, realizes the rough filtering of the water flow, the second filtering formed by the second filter pipe 11 can filter out the small particle impurities in the water flow, realizes the fine filtering of the water flow, so that the water flow is guaranteed to the greatest extent through the double filtering mode Clean degree, at the same time, the water flow backflow can be effectively prevented through the check structure, effectively avoid the case that a large number of large particle impurities intercepted in the first filter pipe enter into the water inlet pipeline connected with the water inlet joint 2 to cause serious pollution.
[0036] The upper end hole edge of the first water hole 6 extends upwards to form a first limiting part 12 in the shape of a ring, the outer ring of the first water hole 6 has a first lower limiting step 13 in the shape of a ring, the upper end port of the rough filtering joint 4 is screwed with a first plug 14 matched therewith, the upper inner wall of the first plug 14 is provided with a first upper limiting step 15 in the shape of a ring, the first filter pipe 10 is located between the first upper limiting step 15 and the first lower limiting step 13, and the lower end of the first filter pipe 10 is sleeved outside the first limiting part 12. This fixing mode not only can guarantee the stability of the first filter pipe 10, but also is beneficial to the disassembly of the first filter pipe 10. Only the first plug 14 is rotated out of the upper end port of the rough filtering joint 4, the first filter pipe 10 can be directly pulled out of the rough filtering joint 4 and cleaned.
[0037] The upper end hole edge of the third water hole 8 extends upwards to form a second limiting part 16 in the shape of a ring, the outer ring of the third water hole 8 has a second lower limiting step 17 in the shape of a ring, the upper end port of the fine filtering joint 5 is screwed with a second plug 18 matched therewith, the upper inner wall of the second plug 18 is provided with a second upper limiting step 19 in the shape of a ring, the second filter pipe 11 is located between the second upper limiting step 19 and the second lower limiting step 17, and the lower end of the second filter pipe 11 is sleeved outside the second limiting part 16. This fixing mode not only can guarantee the stability of the second filter pipe 11, but also is beneficial to the disassembly of the second filter pipe 11. Only the second plug 18 is rotated out of the upper end port of the fine filtering joint 5, the second filter pipe 11 can be directly pulled out of the fine filtering joint 5 and cleaned.
[0038] The upper end of the rough filtering joint 4 and the upper end of the fine filtering joint 5 are both inclined to the right. This structural design is beneficial to guiding the flow direction of the water flow, so that the water flow can pass through the first filter pipe 10 and the second filter pipe 11 more quickly, and the water flow velocity is guaranteed.
[0039] The right end of the limiting seat 104 is provided with a plurality of circumferentially uniformly distributed notches 113, and an elastic sheet 114 is arranged in each notch 113. The right end of the elastic sheet 114 is outwardly inclined and embedded in the clamping groove 102. When the limiting seat 104 is directly installed in the water outlet connector 3, the elastic sheet 114 is extruded and contracted by the inner wall of the water outlet connector 3. When the elastic sheet 114 moves to the position of the clamping groove 102 along with the limiting seat 104, the elastic sheet 114 restores to the original state under the elastic force of itself and is clamped into the clamping groove 102, thereby achieving the fixation of itself and the check seat 103.
[0040] The outer edge of the right end surface of the check seat 103 extends rightward to form a ring-shaped connecting portion 115. The inner wall of the connecting portion 115 is provided with a ring-shaped groove 116. The outer wall of the left end of the limiting seat 104 is provided with a ring-shaped protrusion 117 matched with the groove 116. The sealing ring 109 is located between the left end surface of the limiting seat 104 and the right end surface of the check seat 103. This fixing mode can further ensure the stability of the connection between the check seat 103 and the limiting seat 104.
[0041] The left end surface of the sealing ring 109 is provided with a ring-shaped positioning groove 118. The right end surface of the check seat 103 is provided with a positioning protrusion 119 matched with the positioning groove 118. The existence of the positioning protrusion 119 and the positioning groove 118 can play a positioning role when the sealing ring 109 is installed, thereby ensuring that the sealing ring 109 and the sealing head 111 are in a coaxial state, so that the sealing head 111 can accurately block the right end hole of the inner hole of the sealing ring 109.
[0042] The outer wall of the check seat 103 is provided with a ring-shaped groove 120, and an O-shaped ring 121 matched with the ring-shaped groove 120 is arranged in the ring-shaped groove 120. The existence of the O-shaped ring 121 can effectively ensure the sealing property between the outer wall of the check seat 103 and the inner wall of the water outlet connector 3, thereby effectively avoiding the water leakage when the water flows back.
Claims
1. A double filter band check filter valve, comprising a valve body, a water inlet joint arranged at the left end of the valve body, and a water outlet joint arranged at the right end of the valve body, characterized in that: The valve body upper surface is provided with a coarse filter joint, a fine filter joint located at the right side of the coarse filter joint; the water inlet joint and the coarse filter joint are connected through the first water through hole; the coarse filter joint and the left part of the valve body are connected through the second water through hole; the right part of the valve body and the fine filter joint are connected through the third water through hole; the fine filter joint and the water outlet joint are connected through the fourth water through hole; the coarse filter joint is provided with a first water filtering pipe, the lower end of the first water filtering pipe is connected with the first water through hole, and the outer wall of the first water filtering pipe shields the second water through hole; the fine filter joint is provided with a second water filtering pipe, the lower end of the second water filtering pipe is connected with the third water through hole, and the outer wall of the second water filtering pipe shields the fourth water through hole; the diameter of the filter hole on the first water filtering pipe is larger than that of the filter hole on the second water filtering pipe; the water outlet joint is provided with a check structure.
2. A dual filter check filter valve according to claim 1, characterized in that: The upper end of the first water through hole is extended outward to form a first limiting part; the outer ring of the first water through hole is provided with a first lower limiting step; the upper end of the coarse filter joint is screwed with a first plug matched therewith; the upper inner wall of the first plug is provided with a first upper limiting step; the first water filtering pipe is located between the first upper limiting step and the first lower limiting step, and the lower end of the first water filtering pipe is sleeved with the first limiting part.
3. A dual filter check filter valve according to claim 1, wherein: The upper end of the third water through hole is extended outward to form a second limiting part; the outer ring of the third water through hole is provided with a second lower limiting step; the upper end of the fine filter joint is screwed with a second plug matched therewith; the upper inner wall of the second plug is provided with a second upper limiting step; the second water filtering pipe is located between the second upper limiting step and the second lower limiting step, and the lower end of the second water filtering pipe is sleeved with the second limiting part.
4. A dual filter check filter valve according to claim 1, wherein: The upper end of the coarse filter joint and the upper end of the fine filter joint are both inclined to the right.
5. A dual filter check filter valve according to claim 1, wherein: The check structure comprises a clamping part arranged in the left part of the water outlet joint, and the clamping part is annular; The water outlet joint is provided with a clamping groove which is annular and located at the right side of the clamping part; the diameter of the clamping groove gradually increases from left to right; the water outlet joint is provided with a check seat which is annular and matched with the right side wall of the clamping part; the right side of the check seat is provided with a limiting seat matched with the clamping groove; the limiting seat is annular, and the right side of the limiting seat is provided with a guide seat coaxial with the limiting seat; the guide seat and the limiting seat are connected through a plurality of support plates which are uniformly distributed in a circle; the guide seat is provided with a guide hole in the center; the left side wall of the guide seat is provided with a spring groove which is annular; a sealing ring is arranged between the check seat and the limiting seat; the guide hole is provided with a guide rod matched therewith; the left end of the guide rod penetrates into the inner hole of the limiting seat and is provided with a sealing head which seals the right end hole of the inner hole of the sealing ring; a spring is arranged between the sealing head and the bottom of the spring groove and surrounds the guide rod.
6. A dual filter check filter valve according to claim 5, wherein: The right end of the limiting seat is provided with a plurality of uniformly distributed notches; the notches are provided with an elastic sheet, and the right end of the elastic sheet is inclined outward and embedded in the clamping groove.
7. A dual filter check filter valve according to claim 5, wherein: The outer edge of the right end surface of the check seat extends rightward to form a ring-shaped connecting portion, and the inner wall of the connecting portion is provided with a ring-shaped groove.
8. A dual filter check filter valve according to claim 5, wherein: The left end surface of the sealing ring is provided with a ring-shaped positioning groove, and the right end surface of the check seat is provided with a positioning protrusion matched with the positioning groove.
9. A dual filter check filter valve according to claim 5, wherein: The outer wall of the check seat is provided with a ring-shaped groove, and the ring-shaped groove is provided with an O-shaped ring matched with the ring-shaped groove.